first pas
removed unused module
Merge branch 'master' of https://github.com/gem/oq-engine into multi-hazard-curves
demos run.
updated export tests
updated the documentation of classical hazard
updated the hazard getter
update hazard getters
added new optional params
Merge branch 'master' of https://github.com/gem/oq-engine into multi-hazard-curves
use imt=None for multi curves not emempty string
do not compute maps for multi curves
tests updated to use imt=None
update event based qa tests
merge commit
fix getting metadata
Merge branch 'master' of https://github.com/gem/oq-engine into multi-hazard-curves
fix typo
merge commit
removed psha unused module